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Selective and Sensitive Fluorescence Chemosensor for the Hypochlorite Anion in Water.

Authors :
Wei, Fangfang
Lu, Yan
He, Song
Zhao, Liancheng
Zeng, Xianshun
Source :
Journal of Fluorescence. Sep2012, Vol. 22 Issue 5, p1257-1262. 6p.
Publication Year :
2012

Abstract

Based on an oxidized irreversible ring-opening process of the spirolactam of rhodamine 6G to turn on the fluorescence pathway, a highly sensitive, selective fluorescent and easy accessible chemosensor for ClO has been reported. Upon reaction of the chemosensor with ClO ions, a fluorescent enhancement factor over 60-fold is observed. The chemosensor shows a remarkably high selectivity to discriminate between ClO and other ROS, such as HO, TBHP etc., and a wide range of the environmentally and biologically relevant anions and metal ions. The oxidized irreversible ring-opening process of the chemosensor also triggers a visible colorimetric change from colorless to pink, leading to production of both 'naked-eye' and fluorimetric detection of ClO anion. The detection limit is estimated to be 2 × 10 M based on a signal-to-noise ratio of 3:1 method. The chemosensor can be used within a pH span of 6-11.5. The chemosensor also shows excellent performance in natural water samples. [Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10530509
Volume :
22
Issue :
5
Database :
Academic Search Index
Journal :
Journal of Fluorescence
Publication Type :
Academic Journal
Accession number :
79356128
Full Text :
https://doi.org/10.1007/s10895-012-1066-9